There are seven horizontal rows in the periodic table of elements. These horizontal rows are called periods. The vertical rows are called groups.
A row is horizontal. A column is vertical.
Rows are vertical and columns are horizontal.
There are 7 horizontal rows. There are 18 vertical columns.
A row is usually considered horizontal
The horizontal rows on the periodic table are called periods.
These horizontal rows are called periods.
The horizontal rows of elements in the periodic table are called periods.
Rows are horizontal lines. Columns are vertical ones.
The horizontal rows are known as periods.
The horizontal rows on the periodic table are called periods.
These horizontal rows are called periods.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The horizontal rows of elements in the periodic table are called periods.
The horizontal rows on the periodic table are called periods.
The horizontal rows are called periods
Rows
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
rows. the vertical columns are called periods
Horizontal rows are called groups. Groups are formed according to the atomic number.
Rows are horizontal lines. Columns are vertical ones.
Rows are always horizontal, and columns are vertical. It's easier to remember when you think of rows of seats (like in a sports stadium) which are horizontal, and buildings have tall columns, which are vertical.